Tsunami and Tidal Set-Up in Rivers: A Numerical Study

Highlights

Quantifying rivers and their responses. Simulation arrangements. A tsunami and a tide in a numerical river: alike and different. Patterns, relations, numbers. Effects of the bed shape, wave period, riverine current, wave amplitude. Two metrics for the wave decay with distance travelled. Surprises of high water marks: a larger wave dissipates slower. A distance to the wave set-up peak as a scale for wave penetration in a river. Can tidal observations be used for predicting a tsunami’s behavior?